CN205658894U - Infrared sphygmometer based on singlechip - Google Patents
Infrared sphygmometer based on singlechip Download PDFInfo
- Publication number
- CN205658894U CN205658894U CN201620344971.2U CN201620344971U CN205658894U CN 205658894 U CN205658894 U CN 205658894U CN 201620344971 U CN201620344971 U CN 201620344971U CN 205658894 U CN205658894 U CN 205658894U
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- Prior art keywords
- signal
- infrared
- sphygmometer
- receiver
- amplification circuit
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- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model provides an infrared sphygmometer based on singlechip includes signal transmitter, signal receiver, signal amplification circuit, signal processor, display screen, signal receiver, signal amplification circuit, signal processor, display screen connect gradually, signal receiver received signal transmitter outgoing letter number, signal transmitter, it has a infrared emission control, sends the infrared light signal to the fingertip, and infrared emission control is looped in with the power through current controller, and current controller is connected with the time -recorder, signal receiver receives the infrared light signal from the fingertip transmission, signal amplification circuit, the signal of receiving signal receiver enlargies the processing, signal processor, its light signal conversion who has after handling signal amplification circuit becomes voltage signal and the AD converting circuit of transmission for signal processor, the display screen, and shows on the display screen signal of received signal treater output. The utility model has the advantages of, utilizing the infrared light perspective to gather the pulse signal, conveniently carrying, it is high that it surveys the true nature of established standard.
Description
Technical field
This utility model relates to SCM Based infrared sphygmometer, particularly to utilizing light perspectives to gather pulse letter
Device.
Background technology
Pulse is one of important indicator of cardiovascular and cerebrovascular vessel health.The Human Physiology disease information extracted from pulse is clinical
Diagnosis and the important evidence for the treatment of.The collection of pulse is from simply experiencing with finger, and to the extraction of complex device, method is multiple many
Sample 1.Point have following several from principle: photoplethysmographic method, fluid coupling chamber pulse transducer, pressure resistance type pulse sense
Device and strain-type pulse transducer.Comparatively speaking, photoelectric detecting technology can effectively avoid electromagnetic interference, has good
Stability, and detected person will not be produced any injury, it is possible to accomplish the various information 2 of the detection patient of non-intrusive.Existing
In society, lack the pulse transducer using photoelectric detecting technology of a kind of portable low cost high accuracy and sensitivity,
Based on such market demand, Method of Spreading Design.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of SCM Based infrared sphygmometer, utilizes infrared
Light perspectives gathers pulse signal, can be convenient for carrying, and it is high that it measures accuracy.
For solving above-mentioned technical problem, this utility model be the technical scheme is that a kind of SCM Based infrared
Sphygmometer includes signal projector, signal receiver, signal amplification circuit, signal processor, display screen；
Described signal receiver, signal amplification circuit, signal processor, display screen are sequentially connected with, and signal receiver receives
The signal that signal projector sends；
Described signal projector, it has infrared emission tube, sends infrared signal, infrared emission tube to finger tip
Forming loop by current controller with power supply, current controller is connected with timer;
Described signal receiver, is received from the infrared signal of finger tip transmission；
Described signal amplification circuit, the signal receiving signal receiver is amplified processing；
Described signal processor, its optical signal having after being processed by signal amplification circuit is converted into voltage signal and transmits
To the A/D convertor circuit of signal processor；
Described display screen, receives the signal of signal processor output and shows on a display screen.
Further, the faint sinusoidal current signal of signal receiver is transformed into square wave current letter by signal amplification circuit
Number.
Further, infrared sphygmometer also includes signal adjustment circuit；
Described signal adjustment circuit, is filtered the infrared signal of signal amplification circuit processing and amplifying, amplitude adjusts.
Further, integrated wireless network emitter on signal receiver；
Integrated wireless net receptor at end on described signal amplification circuit, signal receiver and signal amplification circuit are by wireless
The whole emitter of net is connected with wireless network receptor at end.
Further, infrared sphygmometer also includes ring for fixing, and fixed trap includes overlapping frame, and set frame is provided with slideway, overlaps frame
Being provided with buffering spongy layer with skin contact, buffering spongy layer is provided with open-work, and signal projector, signal receiver are connected to set
On frame and can slide along slideway, signal projector, signal receiver are connected by bow.
It is also possible that bow is contraction pole.
Further, buffering spongy layer is provided with cannelure, and the open-work on buffering spongy layer is connected by cannelure, cannelure
Being provided with opening with set frame phase-contact surface and skin bark graft contacting surface does not set opening, the light emission port of signal projector inserts cannelure
In, the light receiver mouth of signal receiver inserts in cannelure.
The utility model has the advantage of, 1, the measurement of pulse, need the bio signal of pulse is changed into the signal of telecommunication.Adopt
With photoelectric detecting technology, it is intended that the bio signal of pulse is changed into light pulse signal, after light pulse signal is changed into telecommunications
Number process.Blood is mainly composed of hemoglobin and HbO2 Oxyhemoglobin, hemoglobin and HbO2 Oxyhemoglobin to difference
The absorption curves of wavelength is as follows, it is seen that two kinds of materials are relatively weak to infrared ray absorbing, and corresponding intensity in transmission is stronger.With red
Blood capillary is irradiated in outside line, and along with the fluctuating of pulse, in blood vessel, the quantity of hemoglobin and HbO2 Oxyhemoglobin is being continually changing,
The intensity of the Infrared therefore transmitted also can be continually changing, and forms light pulse.Light-sensitive element is used light pulse to be changed
For the change of electric current, i.e. complete the extraction of pulse signal.
2, carry out, by current controller, the ultrared intensity that control signal emitter sends, for infrared-emitting diode
For to flow through electric current the biggest, launch infra-red intensity the biggest, infrared angle is the least, can gather difference within a period of time
Infra-red intensity irradiates the signal that pulse is formed, and can improve the accuracy of pulses measure.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Fig. 2 is signal projector electrical block diagram.
Fig. 3 is signal amplification shaping circuit.
Fig. 4 is signal processing and display circuit.
Fig. 5 is fixed ring schematic diagram.
Fig. 6 is A-A sectional schematic diagram in Fig. 5.
As figure, signal projector 10, signal receiver 20, signal amplification circuit 30, signal processor 40, display screen 50,
Wireless network emitter 21, current controller 11, timer 12, fixed trap 60, set frame 61, buffering spongy layer 62, open-work 63,
Bow 64, cannelure 65.
Detailed description of the invention
In Fig. 1, a kind of SCM Based infrared sphygmometer includes signal projector 10, signal receiver 20, signal
Amplifying circuit 30, signal processor 40, display screen 50；
Signal receiver 20, signal amplification circuit 30, signal processor 40, display screen 50 are sequentially connected with, signal receiver
20 receive the signal that signal projector 10 sends, it is preferred that integrated wireless network emitter 21 on signal receiver 20；
Integrated wireless net receptor at end 31 on signal amplification circuit 30, signal receiver 20 passes through with signal amplification circuit 30
Wireless network emitter at end 21 is connected with wireless network receptor at end 31；
Signal projector 10(signal projector is preferably infrared-emitting diode), it has infrared emission tube, to
Finger tip sends infrared signal, and in Fig. 2, infrared emission tube 10 forms loop, electric current by current controller 11 with power supply
Controller 11 is connected with timer 12, during work, pre-sets or arranges current controller 11 temporarily work on timer 12
Time Change, after current controller 11 starts, the electric current in its infrared emission tube 10 can change, for infrared
Flowing through electric current for penetrating diode the biggest, launch infra-red intensity the biggest, infrared angle is the least, when gathering pulse signal,
The red transmission of different infra-red intensities crosses the same pulse that need to gather data, can form the lower arteries and veins of different infra-red intensity
The data fought, i.e. improve later stage process and form the accuracy of final pulse data;
Signal receiver 20, is received from the infrared signal of finger tip transmission；
Signal amplification circuit 30, the signal receiving signal receiver is amplified processing；Preferably, signal amplification circuit
The faint sinusoidal current signal of signal receiver is transformed into square wave current signal；In Fig. 3, this partial circuit selects LM358, bag
Including two operational amplifiers, higher level's signal is inputted by 5 feet, and the first order is closed loop application, and amplification is:
Av=1+ (the R6 right side+R5)/R6 is left
Amplification Av is up to ∞ in theory.In practical operation, standardsizing rheostat R6 examination amplification effect reaches best.C6 is
Amplifier input offset electric capacity, prevents upper limiting frequency from reducing because of the increase of R5, and eliminates the output voltage produced because of parasitic capacitance
Phase place delayed.
The second level is open loop application, and Vcc is set as the 5V therefore output high level when input voltage is higher than 2.5V, and voltage is low
Output low level when 2.5V, for subordinate's processing of circuit.
In Fig. 4, signal processor 40, its optical signal having after being processed by signal amplification circuit is converted into voltage signal
And it is transferred to the A/D convertor circuit of signal processor；
Display screen 50, receives the signal of signal processor output and shows on a display screen.
Preferably, infrared sphygmometer also includes signal adjustment circuit；
Described signal adjustment circuit, is filtered the infrared signal of signal amplification circuit processing and amplifying, amplitude adjusts.
In Fig. 5, a kind of SCM Based infrared sphygmometer also includes that ring for fixing 60, fixed trap 60 include overlapping frame
61, set frame 61 is provided with slideway, and set frame 61 and skin contact are provided with buffering spongy layer 62, and buffering spongy layer 62 is provided with open-work
63, signal projector 10, signal receiver 20 are connected to overlap on frame 61 and can slide along slideway, signal projector 10, signal
Receptor 20 is connected by bow 64, it is preferred that bow 64 is contraction pole.
In Fig. 6, it is preferred that buffering spongy layer 62 is provided with cannelure 65, cannelure 65 is by buffering spongy layer 62
Open-work 63 connects, and cannelure 65 is provided with opening with set frame 61 phase-contact surface and skin bark graft contacting surface does not set opening, signal projector 10
Light emission port insert in cannelure 65, the light receiver mouth of signal receiver 20 inserts in cannelure 65.
When gathering data, can be first enclosed within finger tip by set frame 61, buffering spongy layer 62 is in the effect of set frame 61 with finger tip
Under deform, it is achieved the sealing to set frame 61 with finger tip contacts face, set frame 61 can use the material that intensity is bigger, to ensure
The signal projector 10, the signal receiver 20 that are connected to it on can along slideway slidably, and the thickness of buffering spongy layer 62 can
Being adjusted with the structure according to human body difference finger, such as, be enclosed within big mother refers to, its buffering spongy layer 62 thickness is and big female
Refer to two faces, the short side place of connecing thin and to refer to that two long sides connect outside thick with big mother, use such buffering sponge room 62 can be closeer
, there is gap (after having gap, between natural light can pass through on buffering spongy layer 62 with finger tip in being enclosed within finger tip by set frame 61 of envelope
Gap enters in set frame, and spoofing transmitter 10, signal receiver 20 are launched or receiving infrared-ray, ultimately causes test result and loses
Very)；After being packaged by set frame 61, slip signals emitter 10, signal receiver 20 can be passed through, gather from position through finger tip
The data formed after pulse, before so can avoiding in fixed position through finger tip shape by skin (finger scratch, callous etc.)
Interference.
Preferably, signal projector 10, signal receiver 20 are connected by bow 64, can make signal projector 10, letter
Number receptor 20 can move integrally, in case stop signal receptor 20 receives infrared ray that signal projector 10 sends through finger tip
Signal, bow 64 length can be adjusted according to experimental data, it is also possible to adjusts to the thickness of finger tip according to tested
Whole.
The light emission port of signal projector 10 inserts in cannelure 65, and the light receiver mouth of signal receiver 20 inserts ring
In shape groove 65, nature light or other light can be avoided signal projector 10, the interference of signal receiver 20.Signal projector 10
Launch infrared ray by open-work, signal receiver 20 receives the infrared signal through finger tip by open-work.
Claims (7)
1. a SCM Based infrared sphygmometer, it is characterised in that: described infrared sphygmometer includes signal projector, signal
Receptor, signal amplification circuit, signal processor, display screen；
Described signal receiver, signal amplification circuit, signal processor, display screen are sequentially connected with, and signal receiver receives signal
The signal that emitter sends；
Described signal projector, it has infrared emission tube, sends infrared signal to finger tip, and infrared emission tube passes through
Current controller forms loop with power supply, and current controller is connected with timer;
Described signal receiver, is received from the infrared signal of finger tip transmission；
Described signal amplification circuit, the signal receiving signal receiver is amplified processing；
Described signal processor, its optical signal having after being processed by signal amplification circuit is converted into voltage signal and is transferred to letter
The A/D convertor circuit of number processor；
Described display screen, receives the signal of signal processor output and shows on a display screen.
The SCM Based infrared sphygmometer of one the most according to claim 1, it is characterised in that: described signal amplifies electricity
The faint sinusoidal current signal of signal receiver is transformed into square wave current signal by road.
The SCM Based infrared sphygmometer of one the most according to claim 1, it is characterised in that: described infrared sphygmometer
Also include signal adjustment circuit；
Described signal adjustment circuit, is filtered the infrared signal of signal amplification circuit processing and amplifying, amplitude adjusts.
The SCM Based infrared sphygmometer of one the most according to claim 1, it is characterised in that: described signal receiver
Upper integrated wireless network emitter；
Integrated wireless net receptor at end on described signal amplification circuit, signal receiver is with signal amplification circuit by wireless network eventually
Emitter is connected with wireless network receptor at end.
The SCM Based infrared sphygmometer of one the most according to claim 1, it is characterised in that: described infrared sphygmometer
Also including ring for fixing, fixed trap includes overlapping frame, and set frame is provided with slideway, and set frame is provided with buffering spongy layer with skin contact,
Buffering spongy layer is provided with open-work, and signal projector, signal receiver are connected to overlap on frame and can slide along slideway, and signal is sent out
Emitter, signal receiver are connected by bow.
The SCM Based infrared sphygmometer of one the most according to claim 5, it is characterised in that: described bow is for receiving
Contracting bar.
The SCM Based infrared sphygmometer of one the most according to claim 5, it is characterised in that: described buffering spongy layer
Being provided with cannelure, the open-work on buffering spongy layer is connected by cannelure, and cannelure is provided with opening and skin with set frame phase-contact surface
Bark graft contacting surface does not set opening, and the light emission port of signal projector inserts in cannelure, and the light receiver mouth of signal receiver is inserted
Enter in cannelure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620344971.2U CN205658894U (en) | 2016-04-22 | 2016-04-22 | Infrared sphygmometer based on singlechip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620344971.2U CN205658894U (en) | 2016-04-22 | 2016-04-22 | Infrared sphygmometer based on singlechip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205658894U true CN205658894U (en) | 2016-10-26 |
Family
ID=57163578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620344971.2U Expired - Fee Related CN205658894U (en) | 2016-04-22 | 2016-04-22 | Infrared sphygmometer based on singlechip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205658894U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105725986A (en) * | 2016-04-22 | 2016-07-06 | 湖北三峡职业技术学院 | Infrared pulsemeter based on single chip microcomputer |
| CN106580261A (en) * | 2016-12-30 | 2017-04-26 | 天津森宇科技发展有限公司 | Intelligent system for detecting human pulse by detecting finger end image changes |
-
2016
- 2016-04-22 CN CN201620344971.2U patent/CN205658894U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105725986A (en) * | 2016-04-22 | 2016-07-06 | 湖北三峡职业技术学院 | Infrared pulsemeter based on single chip microcomputer |
| CN106580261A (en) * | 2016-12-30 | 2017-04-26 | 天津森宇科技发展有限公司 | Intelligent system for detecting human pulse by detecting finger end image changes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161026 Termination date: 20190422 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |